Participants list at the Indonesia Open 2012
International players
| 1 | GM | Ivan Sokolov | Netherlands | 2696 |
| 2 | GM | Li Chao | China | 2685 |
| 3 | GM | Vlad Tkachiev | France | 2651 |
| 4 | GM | Viorel Iordachesu | Moldova | 2641 |
| 5 | GM | Yu Yangyi | China | 2640 |
| 6 | GM | Nguyen Ngoc Truong Son | Vietnam | 2639 |
| 7 | GM | Ganguly Surya Shekar | India | 2629 |
| 8 | GM | Dmitri Bocharov | Russia | 2603 |
| 9 | GM | Jaan Ehlvest | USA | 2601 |
| 10 | GM | Oleg Korneev | Spain | 2596 |
| 11 | GM | Avetik Grigoryan | Armenia | 2579 |
| 12 | GM | Ehsan Ghaem Maghami | Iran | 2579 |
| 13 | GM | Merab Gagunashvili | Georgia | 2578 |
| 14 | GM | Oliver Barbosa | Philippines | 2554 |
| 15 | GM | Boris Chatalbashev | Bulgaria | 2549 |
| 16 | GM | Antonio Rogelio Jr. | Philippines | 2548 |
| 17 | GM | Lu Shanglei | China | 2542 |
| 18 | GM | John Paul Gomez | Philippines | 2539 |
| 19 | GM | Dao Thien Hai | Vietnam | 2526 |
| 20 | Xiu Deshun | China | 2524 | |
| 21 | GM | Alexei Barsov | Uzbekistan | 2521 |
| 22 | GM | Dzhumaev Marat | Uzbekistan | 2515 |
| 23 | GM | Mark Paragua | Philippines | 2508 |
| 24 | GM | Xu Jun | China | 2506 |
| 25 | IM | Nguyen Van Huy | Vietnam | 2506 |
| 26 | IM | Nguyen Duc Hoa | Vietnam | 2505 |
| 27 | GM | Cao Sang | Vietnam | 2502 |
| 28 | IM | M. Shyamsundar | India | 2494 |
| 28 | GM | Darwin Laylo | Philippines | 2489 |
| 30 | IM | Wang Chen | China | 2485 |
| 31 | IM | Kirill Kuderinov | Kazakhstan | 2484 |
| 32 | Wan Yunguo | China | 2474 | |
| 33 | GM | Eugenio Torre | Philippines | 2469 |
| 34 | WGM | Hoang Thanh Trang | Hungary | 2464 |
| 35 | FM | Wei Yi | China | 2453 |
| 36 | IM | Gao Rui | China | 2442 |
| 37 | GM | Richard Bitoon | Philippines | 2442 |
| 38 | IM | Lou Yiping | China | 2412 |
| 39 | WGM | Sophie Milliet | France | 2410 |
| 40 | WGM | Tania Sachdev | India | 2401 |
| 41 | WGM | Pham Le Thao Nguyen | Vietnam | 2391 |
| 42 | WGM | Guo Qi | China | 2389 |
| 43 | Bai Jinshi | China | 2250 | |
| 44 | WGM | Dinara Saduakassova | Kazakhstan | 2236 |
| 45 | FM | Paulo Bersamina | Philippines | 2205 |
Local players
| 1 | GM | Megaranto, Susanto | Indonesia | 2529 |
| 2 | IM | Irwanto, Sadikin | Indonesia | 2412 |
| 3 | IM | Juswanto, Denny | Indonesia | 2412 |
| 4 | GM | Barus, Cerdas | Indonesia | 2400 |
| 5 | IM | Gunawan, Ronny | Indonesia | 2395 |
| 6 | IM | Wahono, Awam | Indonesia | 2389 |
| 7 | IM | Ginting, Nasib | Indonesia | 2385 |
| 8 | IM | Purnama, Tirta Chandra | Indonesia | 2384 |
| 9 | FM | Tunasly, Kifly | Indonesia | 2376 |
| 10 | IM | Lioe, Dede | Indonesia | 2375 |
| 11 | GM | Ardiansyah, H | Indonesia | 2371 |
| 12 | IM | Sitanggang, Salor | Indonesia | 2367 |
| 13 | WGM | Sukandar, Irine Kharisma | Indonesia | 2362 |
| 14 | FM | Pitra, Andika | Indonesia | 2340 |
| 15 | FM | Novita, Anjas | Indonesia | 2339 |
| 16 | FM | Hamdani, Rudin | Indonesia | 2328 |
| 17 | IM | Tirto | Indonesia | 2322 |
| 18 | FM | Kasmiran | Indonesia | 2310 |
| 19 | FM | Mahmud, Syarif | Indonesia | 2289 |
| 20 | Jafar, Sofyan | Indonesia | 2286 | |
| 21 | FM | Kaisar, Jenius Hakiki | Indonesia | 2285 |
| 22 | FM | Sonjaya, Deni | Indonesia | 2284 |
| 23 | IM | Situru, Muhammad Ivan | Indonesia | 2284 |
| 24 | Aris, T.L.S. | Indonesia | 2263 | |
| 25 | Sinurat, Tumpak | Indonesia | 2258 | |
| 26 | Sutarno | Indonesia | 2252 | |
| 27 | GM | Suradiradja, Herman | Indonesia | 2238 |
| 28 | FM | Marentek, Hanny | Indonesia | 2232 |
| 29 | Pamungkas, Junaid | Indonesia | 2221 | |
| 30 | Margana, Adhy | Indonesia | 2221 | |
| 31 | Hendra, Johan | Indonesia | 2205 | |
| 32 | WIM | Sihite, Chelsie Monica | Indonesia | 2204 |
| 33 | Panggabean, Hasian | Indonesia | 2204 | |
| 34 | Sean Windshand C | Indonesia | 2148 | |
| 35 | WFM | Dewi, Aa Citra | Indonesia | 2143 |
| 36 | Anasrullah | Indonesia | 2138 | |
| 37 | Masruri Rahman | Indonesia | 2101 | |
| 38 | WCM | Kadek, Iin Dwijayanti | Indonesia | 2025 |
| 39 | Ferdiman Tersiman | Indonesia | 2005 | |
| 40 | Azarya Jodi Setyaki | Indonesia | 1928 | |
| 41 | Aay, Aisyah Anisa | Indonesia | 1818 | |
| 42 | Lutfi, Ali | Indonesia | ||
| 43 | Ummi, Fisabilillah | Indonesia | ||
| 44 | Yoseph Taher | Indonesia |
